<template>
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!--卡片视图区域-->
    <el-card class="box-card">
      <!--搜索与添加区域--><!--Layout布局-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容"
                    v-model="queryInfo.query"
                    clearable
                    @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>

        <el-col :span="4">
          <!--添加用户按钮-->
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>

      </el-row>
      <!--用户列表区-->
      <el-table
          :data="userlist"
          style="width: 100%"
          stripe
          border>
        <el-table-column label="序号" type="index" align="center" width="50"></el-table-column>
        <el-table-column label="姓名" prop="username" align="center"></el-table-column>
        <el-table-column label="邮箱" prop="email" align="center"></el-table-column>
        <el-table-column label="电话" prop="mobile" align="center"></el-table-column>
        <el-table-column label="角色" prop="role_name" align="center"></el-table-column>
        <el-table-column label=" 状态" prop="mg_state" align="center">
          <!--作用域插槽-->
          <template slot-scope="scope">
            <el-switch
                v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" align="center" width="180">
          <template slot-scope="scope">
            <!--修改按钮-->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!--删除按钮-->
            <el-button type="danger" icon="el-icon-delete" size="mini"
                       @click="removeUserById(scope.row.id)"></el-button>
            <!--分配角色按钮-->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>

      </el-table>
      <!--分页区域-->
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1, 2, 5, 10]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
          background>
      </el-pagination>
    </el-card>

    <!--添加用户的对话框-->
    <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%" @close="addDialogClosed">
      <!--内容主体区域-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
    <el-button @click=" addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
    </el-dialog>

    <!--修改用户信息的对话框-->
    <el-dialog
        title="修改用户信息"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
    </el-dialog>

    <!--分配角色的对话框-->
    <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户: {{ userInfo.username }}</p>
        <p>当前的角色: {{ userInfo.role_name }}</p>
        <p>分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Users",
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, callback) => {
      //验证邮箱的正则表达式
      const regEmail = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/
      if (regEmail.test(value)) {
        //合法的邮箱
        return callback();
      }
      callback(new Error('请输入正确的邮箱'));
    }
    //验证手机号的规则
    var checkMobile = (rule, value, callback) => {
      //验证手机号的正则表达式
      const regMobile = /^1[3|4|5|6|7|8|9]\d{9}$/;
      if (regMobile.test(value)) {
        return callback();
      }
      callback(new Error('请输入正确的手机号'))
    }

    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: '',
        //当前的页数
        pagenum: 1,
        //当前每页显示2条数据
        pagesize: 2,
      },
      userlist: [],
      total: 0,
      //控制添加用户对话框的显示和隐藏
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: '',
      },
      addFormRules: {
        username: [
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入密码', trigger: 'blur'},
          {min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur'}],
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'}, {validator: checkEmail, trigger: 'blur'}],
        mobile: [
          {required: true, message: '请输入手机号', trigger: 'blur'}, {validator: checkMobile, trigger: 'blur'}],
      },
      //控制修改用户信息对话框的显示和隐藏
      editDialogVisible: false,
      //查询到的用户信息
      editForm: {},
      //修改表单信息的验证规则对象
      editFormRules: {
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'}, {validator: checkEmail, trigger: 'blur'}],
        mobile: [
          {required: true, message: '请输入手机号', trigger: 'blur'}, {validator: checkMobile, trigger: 'blur'}],
      },
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      //需要被分配角色的用户信息
      userInfo: {},
      //所有角色数据列表
      rolesList: [],
      //已选中的角色ID值
      selectedRoleId: [],
    }
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const {data: res} = await this.$axios.get('users', {params: this.queryInfo})
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败!')
      this.userlist = res.data.users
      this.total = res.data.total
      // console.log(res);
    },
    //监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize);
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    //监听  switch 开关状态的改变
    async userStateChanged(userinfo) {
      // console.log(userinfo);
      const {data: res} = await this.$axios.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
      //resetFields()对该表单项进行重置，将其值重置为初始值并移除校验结果
    },
    //点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid);
        if (!valid) return
        //可以发起添加用户的网络请求
        const {data: res} = await this.$axios.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败!')
        }
        this.$message.success('添加用户成功!')
        //隐藏添加用户的对话框
        this.addDialogVisible = false
        //重新获取用户列表
        this.getUserList();
      });
    },
    //展示编辑用户信息的对话框
    async showEditDialog(id) {
      const {data: res} = await this.$axios.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
      // console.log(id);
    },
    //监听修改用户信息对话框关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        // console.log(valid);
        if (!valid) return
        //发起修改用户信息的数据请求
        const {data: res} = await this.$axios.put('users/' + this.editForm.id,
            {email: this.editForm.email, mobile: this.editForm.mobile})
        if (res.meta.status !== 200) {
          this.$message.error('更新用户信息失败!')
        }
        //关闭更改用户信息的对话框
        this.editDialogVisible = false
        //刷新数据列表
        this.getUserList();
        //提示用户信息修改成功
        this.$message.success('更新用户信息成功!')
      })
    },
    //根据ID删除对应的用户信息
    async removeUserById(id) {
      // console.log(id);
      //弹框询问是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户数据, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // console.log(confirmResult);
      //如果用户确认删除，则返回值为字符串confirm
      //如果用户取消删除，则返回值为字符串cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除');
      }

      const {data: res} = await this.$axios.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户信息失败！')
      }
      this.$message.success('删除用户信息成功！')
      this.getUserList();
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      //在展示对话框之前，获取所有角色列表
      const {data: res} = await this.$axios.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolesList = res.data;


      this.setRoleDialogVisible = true
    },
    //点击按钮，分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色!')
      }
      const {data: res} = await this.$axios.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId})
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }
      this.$message.success('更新角色成功！')
      this.getUserList();
      this.setRoleDialogVisible = false
    },
    //监听分配角色对话框关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = ''
    },
  }
}
</script>

<style lang="less" scoped>

</style>